Eyebrow pencil and sharpener therefor



Feb. 1, 1966 C..ZIEGLER ETAL 3,232,275

EYEBROW PENCIL AND SHARPENER THEREFOR Filed April 5, 1964 INVENTORS.

HTTORNEY United States Patent 3,232,275 EYEBR UW PENCIL AND SHARPENER THEREFQR Louis C. Ziegler, Englewood Cliifs, and Aaron H. Kupersrnith, West Orange, Ni, assignors to Maradel Products inc, New York, N.Y., a corporation of Delaware Filed Apr. 3, i964, Ser. No. 357,95il Claims. (U. 12ii15) This invention relates to marking devices such, for example, as eyebrow pencils, including sharpener devices, wherein the support for the crayon or marking element comprises a plunger having an enlarged threaded head in threaded engagement with a threaded bore of the barrel of the pencil in movement of said element into extended and retracted positions. More particularly, the invention deals with a threaded engagement between the threaded bore of the barrel and said threaded head, so as to provide relatively free stripping movement of the head with respect to the threads in the bore of the barrel when said head is at the limit of its upper and lower movement in the barrel, thereby definitely checking both movements of the plunger in said barrel.

The invention further deals with a pencil of the character defined employing a tubular tip projecting beyond one end of the barrel, said tip and plunger having interengaging means retaining the plunger against rotation in said tip and the largest diameter of the tip portion being in common alinement with the outside diameter of the barrel of the pencil.

Still more particularly, the invention deals with a pencil structure, wherein the sharpener attachment comprises an assemblage detachable With respect to the other end of the barrel and employed in connection with the free end of the marking element as and when a finishing cap at the first end of the pencil is detached.

The novel features of the invention will be best understood from the foilowing description, when taken together with the accompanying drawing, in which certain embodiments of the invention are disclosed and, in which, the separate parts are designated by suitable reference characters in each of the views and, in which:

FIG. 1 is a diagrammatic side view of a pencil made according to our invention, showing the parts in the normal assembled relationship and indicating in dotted lines relative location of certain parts, as shown in FIG. 2.

FIG. 2 is an enlarged broken section of the device as shown in FIG. 1, with parts of the construction broken away and parts shown in elevation.

Fi 3 is an enlarged detail view illustrating engagement of the plunger head with the threaded portion of the barrel of the pencil.

FIG. 4 is an enlarged section on the line 44 of FIG. 2; and

FIG. 5 is an enlarged section on the line S--5 of FIG. 2.

In illustratin one adaption and use of our invention, we have shown at it an elongated tubular barrel of a pencil, in connection with one end of which is mounted a tubular tip 11, including a large diameter portion 12 seating on the end of the barrel, as seen at 13 in FIG. 2, and having a diameter common to the outside diameter of the barrel. inwardly of the upper end, the barrel has a slight annular depression 14 to extend the material of the barrel into an annular recess 15 in the tip in fixing the tip Ill against displacement from the barrel, the inner end of the tip terminating at 16 where the upper end of internal threads 17 in the bore of the barrel terminates. At a predetermined distance from the end 16 of the tip 11', the threads 17 terminate in a shoulder 18 formed by a smaller diameter bore 19 in the barrel.

The upper end of the tip 11 has a reduced portion 20,

3,232,275 Patented Feb. 1, 1966 upon which is frictionally fitted a finishing cap 21 having an outwardly contracted end 22. The tip 11 has an elongated hexagon bore 23, note FIGS. 4 and 5. The tip 11 has an outwardly contracted end portion 24 terminating at its ends in rounded portions, as seen at 25 in FIG. 2 of the drawing.

Mounted in and movable longitudinally of the hexagon bore of the tip 11 is a plunger 26 of hexagon cross-sectional form, one end of the plunger terminating in a tubular portion 27, part of which is cut away to form a pair of yieldable grippers 28 to frictionally engage and support a crayon or other marking element 29, as diagrammatically seen in FIG. 2 of the drawing. The other end of the plunger 26 has a threaded head 36, the threads 31 of which open through upper and lower or end portions of the head, as seen at 32 and 33 in FIG. 2 of the drawing.

Considering the enlarged sectional detail view of FIG. 3, it will be apparent that threads in the bore of the barrel It and on the surface of the head are widely spaced, so as to form clearances, as illustrated, and these clearances facilitate what may be termed stripping of the head 30 with respect to the threads 17 as and when the head abuts the end 16 of the tip or the shoulder 18 in the barrel. In this connection, it will be understood that, when the operator reaches these stop positions, continued rotation of the barrel will naturally be stopped but, it continued rotation is applied, the head will simply retain its position and strip from the threads 17 by virtue of the clearances defined and the openings, as at 32 and 33. In other words, the need for employing any type of spring backing on the plunger is dispensed with and the plunger is mechanically operated at all times in movement in both directions in the barrel. It Will be understood that, when the element 29 is moved into operative position, it is projected beyond the open end 21 of the cap 21 and the element is also moved into a position projecting beyond the upper end of the tip ill in the operation of sharpening the element 29, particularly when this element has become quite short. When it is long, the sharpening can be performed beyond the end of the cap.

Detachably mounted in the other end of the barrel and fitting snugly and frictionally in the bore 19 of the barrel is a sharpener assemblage 35. The assemblage comprises an outwardly contracted fingerpiece end 36, shouldered, as seen at 37, to engage the end of the barrel 10, the assemblage having an elongated bore 3%; terminating in an enlarged diameter bore 39 in the sleeve portion 40 arranged in the bore 19 of the barrel and adhesively or otherwise secured in the bore 39 is a cylinder portion 41 of a sharpener device 42, having sharpener blades 43 terminating at their outer ends in a ring portion 44, the bore 4-5 of which is adapted to freely receive the element or crayon 29. Between the inner end of the ring 44 and the shoulder 18, the bore 19 of the barrel forms a storage chamber for at least two additional elements or crayons 29 in initial sale of the pencil.

The cap 21 frictionally engages the tip 11 so that, in the use of the pencil, the cap 21 is grasped between the fingers of one hand and the barrel is rotated in either one of two directions in projecting the element 29 through the end of the cap or in moving the element into a position within the cap 21 or to the fully retracted position shown in FIG. 2. While the various parts of the pencil can be formed of any desired materials, in the accompanying drawing, all of the basic parts of the pencil, with the exception of the cap 21, have been indicated as composed of plastic material.

In the showing in FIG. 1, the dotted line at the upper end of the figure represents the inner end 16 of the tip. The dotted line at 44 shows the inner end of the ring 44. The line 18 represents the shoulder as Well as the lower end of the head 36, the upper end of said head being illustrated by the dotted line 30 in FIG. 1. This is to generally illustrate relative spacings between the parts which do not appear from the broken away showing of FIG. 2 of the drawing.

At this time, it is also pointed out that the annular indention, as at 14 in FIG. 1, is exaggerated, as this indention would hardly be noticeable on the resulting pencil, except from close inspection. In connection with the independent movement, or what has been termed as stripping of the head 30 with respect to the threaded bore, the action is more or less of a short clicking operation where the head 31! moves or jumps a slight degree longitudinally of the barrel and maintains its seated engagement with the end 16 or the shoulder 18.

Having fully described our invention, what we claim as new and desire to secure by Letters Patent is:

1. An implement of the character defined comprising an elongated barrel having a longitudinal threaded bore adjacent one end portion of the barrel, a tip rotatably mounted in and keyed to said end portion of the barrel and projecting therebeyond, an elongated plunger mounted in said tip and barrel, key means between the tip and plunger for retaining the plunger against rotation, while permitting longitudinal movement of the plunger in said tip, one end of the plunger having means frictionally supporting a marking element therein, the other end portion of the plunger having an externally threaded head operatively engaging the threaded bore of said barrel, the inner end of said tip terminating at one end or" the threaded portion of the barrel, a shoulder formed in the barrel in spaced relation to said inner end of the tip and movement of said plunger in both directions being checked by the inner end of the tip and said shoulder, and means whereby the threaded head Will have a stripping action with respect to the threaded bore of the barrel when the head is positioned adjacent said shoulder or the inner end of said tip.

2. An implement as defined in claim 1, wherein said key means comprises a hexagon bore in said tip, and a hexagon cross-sectional contour on said plunger operatively engaging said hexagon bore.

3. An implement as defined in claim 1, wherein a sharpener assemblage is detachably coupled with the other end of said barrel, said assemblage seating on said last named end of the barrel and said assemblage including a tubular portion, and a ring portion arranged in said barrel.

4. An implement as defined in claim 3, wherein the bore of the barrel between said ring portion and the shoulder in the barrel forms a storage chamber for marking elements.

5. An implement: as defined in claim 1, wherein said last named means comprises a wide spacing of the threads in the barrel and on said head to provide clearance between engaged threads, and open threads at opposed ends of the head of said plunger.

References Cited by the Examiner UNITED STATES PATENTS 2,131,551 9/1938 Deii 18 2,178,626 11/1939 Deli 12018 2,411,975 12/1946 Nelson 12013 2,565,715 8/1951 Becker ct al. 120-9 2,774,331 12/1956 Smith 12013 2,818,045 12/1957 Smith 12018 2,979,029 4/1961 Melnikoff 12015 X 3,106,908 10/1963 GretZ 120-48 3,115,118 12/1963 Anderson et a1 12018 3,149,612 9/1964 Frank 12018 3,169,511 2/1965 Spatz 120-18 EUGENE R. CAPOZIO, Primary Examiner.

LAWRENCE CHARLES, JEROME SCI-INALL,

Examiners. 

1. AN IMPLEMENT OF THE CHARACTER DEFINED COMPRISING AN ELONGATED BARREL HAVING A LONGITUDINAL THREADED BORE ADJACENT ONE END PORTION OF THE BARREL, A TIP ROTATABLY MOUNTED IN AND KEYED TO SAID END PORTION OF THE BARREL AND PROJECTING THEREBEYOND, AN ELONGATED PLUNGER MOUNTED IN SAID TIP AND BARREL, KEY MEANS BETWEEN THE TIP AND PLUNGER FOR RETAINING THE PLUNGER AGAINST ROTATION, WHILE PERMITTING LONGITUDINAL MOVEMENT OF THE PLUNGER IN SAID TIP, ONE END OF THE PLUNGER HAVING MEANS FRICTIONALLY SUPPORTING A MARKING ELEMENT THEREIN, THE OTHER END PORTION OF THE PLUNGER HAVING AN EXTERNALLY THREADED HEAD OPERATIVELY ENGAGING THE THREADED BORE OF SAID BARREL, THE INNER END OF SAID TIP TERMINATING AT ONE END OF THE THREADED PORTION OF THE BARREL, A SHOULDER FORMED IN THE BARREL IN SPACED RELATION TO SAID INNER END OF THE TIP AND MOVEMENT OF SAID PLUNGER IN BOTH DIRECTIONS BEING CHECKED BY THE INNER END OF THE TIP AND SAID SHOULDER, AND MEANS WHEREBY THE THREADED HEAD WILL HAVE A STRIPPING ACTION WITH RESPECT TO THE THREADED BORE OF THE BARREL WHEN THE HEAD IS POSITIONED ADJACENT SAID SHOULDER OR THE INNER END OF SAID TIP. 